For an ensemble that's super easy but can be worn in a ton of different ways, wear a brown leather biker jacket with navy skinny jeans. You could perhaps get a bit experimental with shoes and add brown cutout suede ankle boots to this ensemble.
Brown Cutout Suede Ankle Boots with Navy Skinny Jeans Smart Casual Outfits In Their 30s
For something more on the relaxed side, wear a beige shawl cardigan with navy skinny jeans. If you want to break out of the mold a little, introduce brown cutout suede ankle boots to your look.